8. A straight horizontal water pipe with square cross-section narrows from a cross-sectional area of 0.3m² to 0.15m². If
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8. A straight horizontal water pipe with square cross-section narrows from a cross-sectional area of 0.3m² to 0.15m². If
8. A straight horizontal water pipe with square cross-section narrows from a cross-sectional area of 0.3m² to 0.15m². If the speed of the water in the narrow part is 3.6 m/s, how fast does it flow in the wide part? [3 marks]
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